Off-target movement of dicamba has damaged thousands of soybean acres in the bootheel of Missouri, Arkansas, and Tennessee. The damage is linked to Monsanto’s Roundup Ready 2 Xtend soybeans that tolerate dicamba. Following Chinese approval last February, Monsanto released Xtend varieties for planting in 2016. These soybeans tolerate both glyphosate and dicamba applications. However, federal regulators did not approve a key link of this system — new dicamba formulations low in volatility potential. Existing dicamba formulations could not be used on Xtend soybeans in 2016
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Agriculture.com